Overview
Estimated achievement difficulty: 3/10
Offline: 27 (740)
Online: 12 (260)
Approximate amount of time to 1000: 15 ~ 20 hours
Minimum number of playthroughs needed: 3
Does difficulty affect achievements?: Yes
Glitched achievements: None
Do Cheats Effect Achievements : No
Mutiple 1000gs Game Version : Yes (Fr / De Version)
I have it on good authority that you can load the last level up on Hard, and then again on Insane to get the Non stackable difficulty game completion achievements.
Achievement Guide
Clingy 25gs
There is a few places to complete this, All you need to is walk up to 15 enemies in a row and kill them using the grapple attack (B button). You must not shoot anyone whilst going after this, as these kills have to be consecutive. (These kills also add up to your 40 grapple kill achievement)
Combat Experience 10gs
See One Man Army Achievement
Combat Veteran 25gs
See One Man Army Achievement
One Man Army 45gs
During story mode, you should accumulate 400 kills, which will unlock Combat Experience, Combat Veteran and One Man Army. Use Grapple or Shooting tactics to kill for these to unlock.
Dead-eye 50gs
For this achievement you need to have a accuracy rating of 80% or higher. I recommed using a sniper rifle to get a headshot, then kill everyone else on the level using Grapple attacks. The stats can be checked by pausing the game (Start button) and going to stats. (Needs to be on Normal or Higher Difficulty)
Sharpshooter 10gs
After you get your gun and get on the elevator turn around to see 4 paratroopers kill these whilst they are decending, not the ones in the distance only the ones nearest to you.
Gravity is a Harsh Mistress 5gs
Right at the start of the game, a paratrooper will land in front of you. Grab him using the Grapple attack (B Button) then throw him to his death using (Up D Pad).
Reservation for One 5gs
This is story related and unlocks at the begining of mission 1
Defender 20gs
This achievement is story related and will unlock when you complete mission 2. (Needs to be on Normal or Higher Difficulty)
Save Yourself 25gs
This achievement is story related and will unlock when you complete mission 3.
Need a Ride? 20gs
This achievement is story related and will unlock when you complete mission 4 (Needs to be on Normal or Higher Difficulty)
TV Repairs 5gs
During mission 5, you will come accross an enemy soldier in a kitchen next to a TV. Grapple him (B Button) and then (Up D Pad) to smash his head into the TV for this to unlock.
I Saved the General 20gs
This achievement is story related and will unlock during mission 5 (Needs to be on Normal or Higher Difficulty)
Impeached 30gs
This achievement is story related and will unlock at the end of mission 5
Swirly Time! 5gs
During Mission 6, Keep your eyes open for a room with Enemies and another door inside to a toilet. There will be an enemy sat on the toilet, use a grapple attack (B Button) and then (Up D Pad) to push his head in the toilet for this to unlock.
Going Nuclear 30gs
This achievement is story related and will unlock when you complete mission 6 (Needs to be on Normal or Higher Difficulty)